How Many Games Are Played If 12 Teams Play Each Other Once? | Round-Robin Calculation

Learn how to calculate the total number of games when 12 teams play each other once using the round-robin formula.

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If 12 teams play each other once, the total number of games played would be 66. This is calculated using the formula for a round-robin tournament, which is N(N - 1) / 2, where N is the number of teams. So, for 12 teams, it means 12(12 - 1) / 2 = 66 games in total.

FAQs & Answers

  1. What formula is used to calculate games in a round-robin tournament? The formula used is N(N - 1) / 2, where N is the number of teams, to find the total number of games when each team plays every other exactly once.
  2. How many games are played if 10 teams play each other once? Using the formula N(N - 1) / 2, for 10 teams it would be 10 × 9 / 2 = 45 games played in total.
  3. What is a round-robin tournament? A round-robin tournament is a competition where each participant plays every other participant an equal number of times, commonly once, to determine rankings fairly.

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